Javascript regular expression for complex string

Question

I want to create a regex which will match string like "123;qwe;12324", this regex is working fine:

[a-zA-Z0-9;]

But I want to allow blank spaces also if preceded or followed by ; but this is not working:

[a-zA-Z0-9;\s(?=;)]

Can someone please help.

georg · Accepted Answer · 2014-08-12 09:35:48Z

2

I guess

/^([a-zA-Z0-9]+\s*;\s*)*[a-zA-Z0-9]+$/

Test

> re.test('abc')
true
> re.test('abc;def')
true
> re.test('abc;  def')
true
> re.test('abc;  def;')
false
> re.test('abc^^^;  def;')
false

answered Aug 12, 2014 at 9:35

georg

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2 Comments

re.test('abc; def;') should also be a valid string for me...please help

@JyotiPuri: try adding ;? to the end